NPCs composing that spawngroup :

an_explosion (10%)

an_immobilizer (10%)

an_inactive_trap (10%)

a_dark_entity (10%)

a_formless_terror (10%)

a_magi_construct (10%)

a_null_field (10%)

a_spike_trap (10%)

a_tanglefoot_trap (10%)

a_wizard_construct (10%)

NPCs spawning around that spawngroup :
(Max range : 200)

necropolis_23, range=197 (582,209,7)

a_phase_spider (50%)
a_phase_spider (50%)

necropolis_75, range=60 (464,291,-162)

a_Paebala_Spirit_Talker (100%)

necropolis_76, range=150 (529,225,-179)

a_Paebala_warrior (100%)

necropolis_79, range=106 (412,450,-162)

a_Paebala_rebel (50%)
a_Paebala_Spirit_Talker (50%)

necropolis_82, range=165 (395,507,-162)

an_escaped_worker (100%)

necropolis_85, range=121 (408,464,-162)

necropolis_86, range=127 (534,436,-162)

necropolis_87, range=194 (382,533,-162)

a_Paebala_Spirit_Talker (100%)

necropolis_88, range=58 (431,405,-162)

an_escaped_worker (50%)
a_Paebala_warrior (50%)

necropolis_89, range=45 (470,312,-160)

a_Paebala_Spirit_Talker (50%)
a_Paebala_warrior (50%)

necropolis_90, range=85 (475,269,-160)

an_escaped_worker (50%)
a_Paebala_warrior (50%)

necropolis_91, range=121 (477,232,-161)